> ## Documentation Index
> Fetch the complete documentation index at: https://wb-21fd5541-workspaces-notebooks.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Work with data files

Use the notebook sidebar to manage files in the notebook sandbox and connect to remote data sources. You can also download W\&B Artifacts into the notebook.

## Understand notebook storage

Each notebook runs in a temporary sandbox. Files that you create, upload, or download appear under **Files** in the notebook sidebar and exist only in the sandbox.

Connected object storage, databases, and data catalogs appear under **Remote storage**.

<Warning>
  Files in the notebook sandbox are temporary. Copy files that you want to keep to persistent storage before the sandbox is reset or deleted.
</Warning>

## View files

To view files in the notebook sidebar:

1. Select **View files** (<Icon icon="folder-tree" iconType="solid" />).
2. Expand one of the following sections:
   * **Files** to view files in the notebook sandbox.
   * **Remote storage** to browse connected remote data sources.

## Manage files and folders

To upload or create a file or folder:

1. In the notebook sidebar, select **View files** (<Icon icon="folder-tree" iconType="solid" />).
2. Expand **Files**.
3. Select one of the following actions:
   * **Upload file** (<Icon icon="arrow-up-from-bracket" iconType="solid" />) to upload an existing file to the sandbox.
   * **Add file** (<Icon icon="file-plus" iconType="solid" />) to create a file.
   * **Add folder** (<Icon icon="folder-plus" iconType="solid" />) to create a folder.

## Download a W\&B Artifact

You can [download and use a W\&B Artifact](/models/artifacts/download-and-use-an-artifact) in a notebook. The downloaded files are stored in the notebook sandbox.

For example, the following code downloads a model Artifact from W\&B Registry:

```python theme={null}
import wandb

REGISTRY_NAME = "Zoo"
MODEL_COLLECTION_NAME = "Classifier_Models"
MODEL_VERSION = 0

artifact_name = (
    f"wandb-registry-{REGISTRY_NAME}/"
    f"{MODEL_COLLECTION_NAME}:v{MODEL_VERSION}"
)

with wandb.init() as run:
    artifact = run.use_artifact(artifact_name)
    artifact_path = artifact.download()
    print(artifact_path)
```

The command returns the path to the downloaded Artifact directory. For example:

```text theme={null}
/workspace/artifacts/zoo-pznwefqb:v0
```

The downloaded Artifact appears in the `artifacts` directory:

<Tree>
  <Tree.Folder name="artifacts" defaultOpen>
    <Tree.Folder name="zoo-pznwefqb:v0">
      <Tree.File name="zoo_wandb.pth" />
    </Tree.Folder>
  </Tree.Folder>

  <Tree.Folder name="wandb">
    <Tree.Folder name="latest-run">
      <Tree.Folder name="files">
        <Tree.File name="config.yaml" />
      </Tree.Folder>
    </Tree.Folder>

    <Tree.File name="debug.log" />
  </Tree.Folder>

  <Tree.File name="notebook.py" />
</Tree>

## Connect a remote data source

To connect object storage, a database, or a data catalog:

1. In the notebook sidebar, select **View files** (<Icon icon="folder-tree" iconType="solid" />).
2. Select **Remote storage** (<Icon icon="hard-drive" iconType="solid" />).
3. Select **Add remote storage**.
4. Select the applicable source type:
   * **Remote Storages** for remote object storage.
   * **Database & Catalogs** for a database or data catalog.
5. Select the provider that you want to connect and follow the prompts.

To learn more, see the following marimo documentation:

* [Remote storage](https://docs.marimo.io/guides/working_with_data/remote_storage/)
* [Connect to a custom database](https://docs.marimo.io/guides/working_with_data/sql/#connecting-to-a-custom-database)